2021 Audi A3 1.5 TFSI S Line

Price: £15,250. Fair price: £336 (2%) under the AskCar estimate of £15,586, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,705 priced Audi A3 adverts on AskCar as of 12 November 2026.

AskCar lists 6,840 used Audi A3 from 2,317 UK dealerships, as of 12 November 2026.

Overview

Make: Audi
Model: A3
Trim: S Line
Version: 1.5 TFSI 35 S Line Manual FWD Euro 6 (s/s) 4dr (148 bhp)
Year: 2021
Mileage: 59,314 miles
Fuel: Petrol
Body: Saloon, 4 doors, 5 seats
Engine: 1.5 litres, 148 bhp
Gearbox: Manual
Drive: Front-wheel drive
Colour: White
CO2: 133 g/km
Emissions standard: Euro 6, ULEZ compliant

About this car

With 59,314 miles on the clock, this 2021 Audi A3 S Line has done roughly 15,800 more miles than a typical 2021 Audi A3. The dealer is asking £15,250, which is £336 below the AskCar estimate of £15,586. To work out the AskCar estimate, we analyse UK dealer adverts for 6,705 Audi A3 cars across different ages and specifications. It first appeared in our advert records today. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at TCS Trade Car Sales (Midlands) in Walsall. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

TCS Trade Car Sales (Midlands) is rated 4.7 out of 5 on Google.

Price

Fair price: £336 (2%) under the AskCar estimate of £15,586.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 6,705 priced Audi A3 adverts across different ages and specifications, as of 12 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £17,700: the median of the 191 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2021 Audi A3 advertised today. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 465 of the 830 first advertised between 12 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 12 November 2026 at £15,250. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 12 November 2026: valid until 12 January 2027.

It has had 3 MOTs. The latest, on 13 January 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 53,997 miles, which matches the advertised 59,314 miles.

Advertised mileage is about 15,800 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

5 other 2021 Audi A3 S Line 1.5 petrol manual saloons are for sale at UK dealers, from £15,000 to £17,000, as of 12 November 2026.

The 3 closest to this car in mileage:

2021 Audi A3 S Line, 1.5 petrol saloon, blue. Mileage: 63,956 miles. Price: £15,895, £645 more than this car. Dealer: Caffyns Volkswagen Brighton in Brighton and Hove. AskCar page: https://askcar.co.uk/car/audi-a3-2021-7a26f907d618
2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 54,283 miles. Price: £15,000, £250 less than this car. Dealer: Autotrade (Birmingham) in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f53bd309aa6a
2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 64,644 miles. Price: £15,499, £249 more than this car. Dealer: Days Motorpark in Swansea. AskCar page: https://askcar.co.uk/car/audi-a3-2021-19b99c14c8ff

Browse all Audi A3 cars for sale · 2021 Audi A3 price guide

Photos

28 photos of this car are on its AskCar page.

As of 12 November 2026, AskCar lists 596,362 cars and vans from 12,840 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.